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BP Prepares for Test of Final Seal

By

Angel Gonzalez

Updated Sept. 19, 2010 9:30 a.m. ET

HOUSTON—BP PLC said Saturday it was waiting for the cement it pumped into the bottom of the Deepwater Horizon well to set before proceeding to test it, in the final part of the effort to seal the well for good.

Pressure testing of the cement seal was scheduled for 11 p.m. Central time and was likely to last one or two hours, according to a person familiar with the situation. An announcement of the result is unlikely to come until Sunday, the person said.